Work holder



H. E. KEMF'TON ET AL WORK HOLDER April 14, 1931.

Filed Jan. 16, 1925 Herbert Z'Rmpion), .Kfizitiv Eda/name, 32 W J 1. wow; 0

Patented Apr. 14, 1931 lll ll'llfifi ldTATES PATENT HERBERT E. KEI EPTOIT, KEITH F. GALLIMGRE, AND RAYMOND M. WOYTYCI-Z, F FOND Application filed January 16, 1925.

The present invention relates to improvements in workholders of the type illustrated in a copending application Serial No. 680,826, filed December 15, "1923 by Herbert E. Kempton and Keith F. Gallimore, and in our coreloaded while another is in the machine.

pending application, Serial No. 728,063, filed July 25, 1924.

The workholders disclosed in these copending applications are portable, and are adapt ed to be quickly and accurately mounted in a machine chuck. This construction permits one workholder or shuttle to be unloaded and ing thereof. These shuttles are also adapted to handle a plurality of work blanks at one time thereby multiplying the output or capacity of the machine tool.

The primary object of the present invention is to provide a novel shuttle of the above type which is extremely simple in construction and operation, inexpensive, and adapted to handle a large variety of work blanks.

Further objects and advantages will become apparent as the description proceeds.

In the accompanying drawing, Figure 1 is a sectional view of a chuck in which a double shuttle embodying the features of our invenion is mounted.

Fig. 2 is a sectional view of a modified form of the shuttle.

. Fig. 3 is a sectional view of a modified form of the shuttle adapted to hold but one work blank at a time.

Fig. l is an end view of the shuttle shown in Fig. 3.

Fig. 5 is a view in side elevation of a loading fixture for the shuttle.

While the invention is suceptible of various modifications and alternative constructions, we have shown in the drawing and will describe in detail the preferred embodiment thereof, but it is to be understood S, BY MESH ASSIGNMENTS, TO THE HEALD MA.-

R, ILZA SAGEFZUSETTS, A CORPORATION OF MASSA- WORK HOLDER Serial No. 2,775.

that we do not thereby intend to limit the invention to the particular form disclosed, but

aim in the appended claims to cover all modifications and alternative constructions falling within the spirit and scope of the invention. 1 r

In its exemplary embodiment, the invention contemplates the provision of a chuck of suitable construction such as the one shown in Figure 1 in which the work holder or shuttle is adapted to be mounted. The chuck comprises a body 6 which is securely attached to a disk 7 on the forward end of a rotatable spindle 8, and which is formed with a pair of diametrically opposed and forwardly extending arms 9. The latter are bridged at their forward ends by an annular front plate 10 which is provided with a central bushing 11 having a flange 12 on its inner end and being concentric about the axis of rotation.

Slidably mounted in the body 6 for reciprocatory movement toward and from the bushing 11 are a plurality of spaced clamping 1 members 13. These members are pressed forwardly by a plurality of coil springs i l, and are adapted to be retracted by a draw rod 15 extending through the spin die 8.

The shuttle mounted in the chuck comprises a body 16 in the formof a ring which is formed in opposite ends with taper bores 17 separated by a central radial flange 18 on its inner periphery. The forward end of the body is formed with a centering notch 19 adapted to fit the flange 12 on the bushing 11 to locate the shuttle in the chuck, and the rear end thereof is adapted to be suitably engaged by the clamping members 13 to hold the shuttle securely in centered position.

A pair of split bushings or clamping sleeves 20 are slidably mounted one in each end of said body, and are formed with taper or wedge peripheral surfaces adapted to coact with the corresponding surfaces of the bores 17. Each sleeve is adapted to receive a work blank 'A which is squared up against the flange 18. The outer ends of the sleeves 20 are provided with peripheral flanges 21 spaced from the ends of the body 16 to prov f vide' anhular spaces for the insertion of a I tool to separate said sleevesj from said body.

' j Refei ring to Fig 2ya, shuttle of similar eonstriiction is, illustrated. A This shuttle is v by ihe provision instead of the peripheral j flanges 21 of a plurality of rzidia l bores open- I jingr' centrally "through the walls ofthe body to? fa'cilitate thegremoval of the sleeves 20.

. J The shuttles can be constructed to hold dif I "'fc'ensiohs constitutir'ig aflange ereformed 10 1i: Q Il-QI ld'QfftljlQSlBQVQO fio sque i ei lp the ofthe workfblenk, In thepnesent i11 "stance, the sleeve is designedto hold a: Worm; .7

' j i orm 'aflfspaoe z o'flthelatten' lieferr iis oo,

distinguished 'froinfthe oi eshown in 1, T

ing theseparation of saidmembers.

ferenit numbers of blanksA at o 1e-time'.; Thus j ;i11;Figs. 8 and'4', We have illustrated ashuttle V designed to hold a single blank; liithi'sshiit f I file," the i-body" is provided with a 'haiidle 23,"

gan'd the sleeve egtendseomp1etely through i i eb'o'd'y-w 'p um i yq paced e ia -2: s

I Q fi y Si mdonits in i ,;ner. periphery wi n of teeth 7 "adapted:ltdimeshiwith -the threa dsjonithe i V Points aboilt'ithe peripher V I v V meniber V beihg edaiotedffo receive a work bIa nkQa circular centering flehg'eipfovided said body m'emben for centering said shuttle in a'ohuck 'e flange on one of said members formed on one of said ihembei s foi faoilitat- V In t testimony I whereof affixed our signatures-.1 v i HERBERT' E; KEM PTIIQN,

' KEITH F. GALLIMORE; 7

2 9 aveiherei n tureiiioi the shuttlesis illustrated. This fix 'tujre' comprises a b ase 26 ,on' which a block";

positeside's of the blook 27 area pair of arms -fi1dapted to receive one end of aish ttle is 5 V located: Extending'upirom-the baseat-op- V which meet atmvertical' journal or guide 5 129' directly over the block-b Aflmm 30' is.

; mounted in said 7 guide for movement toward fand-from'the b1ock,1;i11d"is .i'ieririally; pressed upwardlybye, coil sprii ig 31. V The spring is v v V ;1 10un1;ed pn the' mm between the guide' =29 fend" a Cross arm; 32. j Connected to opposite j endsof the crossfarm 32;for lowerjii1g theram f' I 7 i restnei cl f 'tlle sleeiiejOfiippeniio'st." 1i weclaim as'jour)invention?' f1.- work holding isfh we ll-raving, in (:0

130 are twofiexible Cables 33. li 'loading the 'm V l'sh ittl e, it is plaeed onthegbloek'and' the ram i is lowered. "This-'foreesthef SleeiiesQOi -T: 1"

1 irwarldly jalong the taper'bores l7 ofthe'ybody; a id'e fthereby 'o'z uses iii peripheral contralction 1 of the sleeil esinto"e1ampingfeiigzijgemenfiwith 5'1 ""l shel Work" blanks To u1jl0ad the shuttle f: V i

i fshown jin; Fig; 8;it ifsinouritedinfthe loading/ ,e

ifixtiireiiiaieyersedpositionwith the'smallr 7,55" notch on the exterior ofsziid :bodyooncentric *with said bore, :Whenehyjthe shuttle jmay be 1 G mited V in? a ehuckfa, split sleeve 'slidahly mounted in said bore and having aswedge' eri-i V i ge n ll herewith,end-aflange formed on I w n s 6o theOiiter end of-said sleeve an jec' n ZbQ y Y s 1 '2. A Work hOldIlIig Tshi ttle eomprisihg a 1 ab I E yi 1b h i g b re; a split sleeve iyvedge 'ei'igegement therevi ithysaid sleeve 7 bo'i'ef forhaokin'g upfthe;work, agoentering embe m med ii said-bore and havingav for b acking; .iup theiwOikblmkfahd mezins V RAYM M4 

